[Docs]: bad links to data API

### 📍 Which page are you reading?

https://g6.antv.antgroup.com/en/manual/data#api

### 💭 What's on your mind?

Content needs updating / 内容需要更新

### 🤔 Tell us more

probably all links in that section should link to https://g6.antv.antgroup.com/en/api/data and not to https://g6.antv.antgroup.com/en/api/graph#graphgetdata. currently the link leads to a useless page

### 💡 Got any suggestions?

_No response_

Open https://g6.antv.antgroup.com/en/manual/data#api and inspect the links in its API section, then compare them with https://g6.antv.antgroup.com/en/api/data. Done means the section's links lead to the relevant data API page rather than the reported graph API page.

Written by the indexing model from the issue text.